User manual

Chapter 4: Configuring Quality of Service | 131
GS108T and GS110TP Smart Switch Software Administration Manual
To map 802.1p priorities to queues:
1. Select the Global radio button to apply the same 802.1p priority mapping to all CoS
configurable interfaces or select the Interface radio button to apply 802.1p priority
mapping to on a per-interface basis.
If you map 802.1p priorities to individual interfaces, select the Interface radio button and
then select the interface from the drop-down menu. The interface settings override the
global settings for 802.1p priority mapping.
2. Select the queue to map to the predefined 802.1p priority values.
The 802.1p Priority row contains traffic class selectors for each of the eight 802.1p
priorities to be mapped. The priority goes from low (0) to high (3). For example, traffic with
a priority of 0 is for most data traffic and is sent using “best effort.” Traffic with a higher
priority, such as 3, might be time-sensitive traffic, such as voice or video.
The values in each drop down menu represent the traffic class. The traffic class is the
hardware queue for a port. Higher traffic class values indicate a higher queue position.
Before traffic in a lower queue is sent, it must wait for traffic in higher queues to be sent.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
4. If you make changes to the page, click Apply to apply the changes to the system.
DSCP to Queue Mapping
Use the DSCP to Queue Mapping page to specify which internal traffic class to map the
corresponding DSCP value.
To display the IP DSCP Mapping page, click QoS  CoS  Advanced  DSCP to Queue
Mapping.